07/08/2025
Fleas and ticks are two of the most frequent pet care concerns in America. While prevention is the best defense against these parasites, it’s important to be able to recognize the signs and symptoms of fleas and ticks so you can help your pets if necessary.
Symptoms of Fleas on Dogs
Fleas are most commonly noticed on a dog’s abdomen, the base of the tail and the head.
Common symptoms of fleas on dogs include:
Droppings or “flea dirt” in a dog’s coat (small dark "grains of sand")
Flea eggs (tiny, white grains)
Allergic dermatitis
Excessive scratching, licking or biting at skin
Hair loss
Scabs and hot spots
Pale gums
Tapeworms
Symptom of Fleas on Cats
If you see your cat scratching often and persistently, invest in a fine tooth comb and run it through her fur, paying special attention to the neck and the base of the tail. If you see small, fast-moving brown shapes about the size of a pinhead in her fur, your cat has fleas. Other symptoms:
Droppings of “flea dirt” in a cat’s fur (small dark "grains of sand")
Flea eggs (tiny, white grains)
Itchy, irritated skin
Persistent scratching
Chewing and licking
Hair loss
Tapeworms
Pale lips and gums
Causes of Fleas
Fleas are easily brought in from the outdoors.
Fleas thrive in warm, humid climates at temperatures of 65 to 80 degrees.
Adult fleas spend most of their lives on the animal, laying eggs in the fur.
These eggs drop out onto rugs, upholstery, bedding and furniture; the new adult fleas will, in turn, find their living host (either human or animal).
Flea Complications
Fleas can consume 15 times their own body weight in blood, which can cause anemia or a significant amount of blood loss over time.
This is especially problematic in young puppies or kittens, where an inadequate number of red blood cells can be life-threatening.
Some pets have heightened sensitive to the saliva of fleas, which can cause an allergic reaction known as flea allergy dermatitis.
Flea Treatment
Consult your veterinarian if you suspect your pet has fleas. It is important that all of your pets are treated for fleas, including indoor and outdoor cats, and that the environment is treated as well. Once your veterinarian confirms the diagnosis, a treatment plan may include the following:
Topical or oral treatment or the use of shampoos, sprays and powders on the pet.
Thorough cleaning of your house, including rugs, bedding and upholstery. Severe cases may require using a spray or a fogger, which requires temporary evacuation of the home.
It is very important not to use products on your cat that are intended for dogs.
Lawn treatments may also be needed if your pet keeps getting re-infected every time it goes outside.
Flea Prevention
Use a flea comb on your pet and wash his bedding once a week.
Keep the outside of your house free of organic debris, such as rake clippings and leaves, and remember that fleas like to hide in dark, moist, shady areas.
There are many preventative flea control products available, both as prescription and over-the-counter formulas.